Knockdown box.



J. SURMANN.

KNOGKDOWN BOX.

APPLIOATION FILED JANfzz, 1913 TSU/'maag fave n of Patented June 2,1914.

COLUMBIA LANOGRAPI-I C0 .WASmNnToM n. f:4

JOHANNES SURMANN, OF BREMEN, GERMANY.

KNOCKDOWN BOX.

Specification of Letters Patent.

Patented June 2, 19rd.

Original application filed September 27, 1912, Serial No. 722,604.Divided and this application filed January Serial No. 743,434.

T0 all whom it may concern:

Be it known that I, JOHANNES SURMANN, a subject of the German Emperor,residingat Holzhafen, Bremen, Germany, have invented certain new anduseful Improvements in Knockdown Boxes, of which the following' is aspecification.

This invention relates to knock-down boxes of the type wherein strips ofsuitable material, for instance, corrugated cardboard, are arrangedcrosswise and are bent up to form the boX.

The invention of the present application, which is a division of myapplication Serial No. 722,604-, has for object to provide an improvedbox of the above type, wherein no fastening means, such as rivets, slitsor flaps are necessary, the box being held together solely by friction.

According to the present invention three strips are used, the meetingedges of each of which are always covered by undivided panels of anotherstrip in three abutting planes of the erected box so that `all the edgesof the latter are closed.

`Figure l is a perspective view of a partly erected box according` tothe present inveir tion; Fig. 2 is a perspective view of this box in itscompletely erected state; Fig. 3 is a perspective view of a partlyerected threestrip box obtained by folding in a modified manner thestrips of the box shown in Fig. l.

rlhe improved box is composed of three full-sized intermediate panels a,Z), 0,' a, b, o; c2, b2, 02,' and two-half-sized end panels is shown inFig. l the strip d', c', b', a', d', is bent into the form of arectangular' frame which is inclosed by the strip d2 b2 c2 c? d2, insuch a manner that the two panels a and b2 lie oneinside the other, andthe open sides of the space inclosed by the strip d o b a. are coveredby the panels c2 and a2 of the strip Z2 c2 52 a2 d2. The panel b2 liesoutside the strip d o b o d', and the half panels Z2 cl2 which areturned inward so as to abut with their free edges are situatedunderneath the panel c and inside the space inclosed by the other strip.The box-like shell composed of the two strips is then placed with itspanel a2 upon the panel b of the third strip d a b c d, which latter isthen bent up so that its panels a and c lie against the two oppositesides of the box-like shell. The two half panels d Z are then turned inunderneath the panel c2; namely on, the left hand of Fig. l between theedges of the panels b and c2, and on the right hand between the edges ofthe panel c2 and the abut ting' half panels d.

In the modification shown in Fig. 3 the butt joint formed by the twohalf panels d2 d2 is covered by the panel Z9', joint formed by the twohalf panels d d', is covered by the panel b2. The strips `can beassembled together without the use of fastencrs or paste by merelybending the strips along the lines indicated by the scores. Each stripwhen so bent constitutes one frame for the construction of the box.

Having` now described my invention what I claim as new and desire tosecure by Letters Patent is l. ln a knock-down box, the combination ofthree separate rectangular shells, each composed of a separate bentfive-paneled strip, the said shells being so folded that the two endpanels of each strip, which come together to form a butt joint, arealways covered by a single paneled side of another shell, said shellsbeing held together solely by friction. v

2. in a knock-down box, the combination of inner, intermediate and outerrectangular shells each composed of a bent fivespaneled strip having;its two end panels cooperating to form a two-paneled side of the shell,said three shells being folded so that the meeting edges of the ends ofthe strips are located in three different intersecting1 planes with thetwowpaneled side of each shell covered by a single paneled side of oneof the other shells, whereby the erected box is closed at all its edges.

In testimony whereof l ailix my signature in presence of two witnesses.

JOHANNES SURMANN.

Witnesses:

WILHELM STRUPT, FREDERICK l-loYEnrNnUM.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner o1.' Patents,

Washington, D. C.

and the bntt-

